Though Revols initial product is a feature-filled Bluetooth earbud that will cost $169, the actual (detachable) mold only costs $15 to replace. There wasn't a complete working prototype of the ...

“With Major IV we broke the mold with 80+ hours of playtime, but Major V go miles further by taking that total to 100+ hours,” claims Martin Wennberg, the product manager for Marshall headphones.